#include<iostream>
#include<unistd.h>
#include<pthread.h>

using namespace std;
int cnt = 0;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;


void *Count(void *args)
{
    uint64_t number = (uint64_t)args;
    while(true)
    {
        pthread_mutex_lock(&mutex);
        pthread_cond_wait(&cond, &mutex);
        cout<<"pthread: "<<number<<", cnt : "<<cnt++<<endl;
        pthread_mutex_unlock(&mutex);

    }
}

int main()
{
    for(uint64_t i = 0; i< 5; i++)
    {
        pthread_t tid;
        pthread_create(&tid, nullptr, Count, (void*)i);
    }
    sleep(3);
    cout<<"main thread ctrl begin: "<<endl;

    while(true) 
    {
        sleep(1);
        pthread_cond_signal(&cond);
        cout<<"signal one thread..."<<endl;
    }
    return 0;
}